Table 2 The wavelength used with ICP-OES, instrumental detection limit (IDL), limit of detection (LOD), limit of quantification (LOQ), correlation coefficient, and calibration equations
Metal | Wavelength | IDL (mg/L) | LOD (mg/L) | LOQ (mg/L) | Correlation coefficient | Calibration equation |
|---|---|---|---|---|---|---|
Na | 589.592 | 0.069 | 2.16 | 7.22 | 0.9988 | I = 9245C-7006.1 |
Mg | 285.213 | 0.002 | 0.55 | 1.83 | 0.9999 | I = 1575000C-287546.9 |
Ca | 317.933 | 0.010 | 2.92 | 9.75 | 0.9990 | I = 641100C-632445.1 |
Mn | 257.610 | 0.001 | 0.54 | 1.79 | 0.9990 | I = 4813000C-858583 |
Fe | 238.204 | 0.004 | 0.67 | 2.25 | 0.9996 | I = 590900C-131479.4 |
Cr | 267.716 | 0.007 | 0.44 | 1.48 | 0.9991 | I = 640200C-92120 |
Co | 228.616 | 0.007 | 0.31 | 1.03 | 0.9994 | I = 209100C-20260.1 |
Ni | 231.604 | 0.015 | 0.39 | 1.30 | 0.9994 | I = 185200C-20700.7 |
Cu | 327.393 | 0.009 | 0.25 | 0.82 | 0.9996 | I = 822900C-66599.7 |
Zn | 206.200 | 0.005 | 0.75 | 2.50 | 0.9980 | I = 96750C-24088.4 |
Cd | 228.802 | 0.030 | 0.15 | 0.51 | 0.9995 | I = 353000C-14855.8 |
K | 766.490 | – | 6.78 | 21.3- | 0.9968 | I = 4614C + 3950.7 |